LAPACK 3.12.0
LAPACK: Linear Algebra PACKage
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iladiag.f
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1*> \brief \b ILADIAG
2*
3* =========== DOCUMENTATION ===========
4*
5* Online html documentation available at
6* http://www.netlib.org/lapack/explore-html/
7*
8*> \htmlonly
9*> Download ILADIAG + dependencies
10*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/iladiag.f">
11*> [TGZ]</a>
12*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/iladiag.f">
13*> [ZIP]</a>
14*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/iladiag.f">
15*> [TXT]</a>
16*> \endhtmlonly
17*
18* Definition:
19* ===========
20*
21* INTEGER FUNCTION ILADIAG( DIAG )
22*
23* .. Scalar Arguments ..
24* CHARACTER DIAG
25* ..
26*
27*
28*> \par Purpose:
29* =============
30*>
31*> \verbatim
32*>
33*> This subroutine translated from a character string specifying if a
34*> matrix has unit diagonal or not to the relevant BLAST-specified
35*> integer constant.
36*>
37*> ILADIAG returns an INTEGER. If ILADIAG < 0, then the input is not a
38*> character indicating a unit or non-unit diagonal. Otherwise ILADIAG
39*> returns the constant value corresponding to DIAG.
40*> \endverbatim
41*
42* Arguments:
43* ==========
44*
45*
46* Authors:
47* ========
48*
49*> \author Univ. of Tennessee
50*> \author Univ. of California Berkeley
51*> \author Univ. of Colorado Denver
52*> \author NAG Ltd.
53*
54*> \ingroup iladiag
55*
56* =====================================================================
57 INTEGER FUNCTION iladiag( DIAG )
58*
59* -- LAPACK computational routine --
60* -- LAPACK is a software package provided by Univ. of Tennessee, --
61* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
62*
63* .. Scalar Arguments ..
64 CHARACTER diag
65* ..
66*
67* =====================================================================
68*
69* .. Parameters ..
70 INTEGER blas_non_unit_diag, blas_unit_diag
71 parameter( blas_non_unit_diag = 131, blas_unit_diag = 132 )
72* ..
73* .. External Functions ..
74 LOGICAL lsame
75 EXTERNAL lsame
76* ..
77* .. Executable Statements ..
78 IF( lsame( diag, 'N' ) ) THEN
79 iladiag = blas_non_unit_diag
80 ELSE IF( lsame( diag, 'U' ) ) THEN
81 iladiag = blas_unit_diag
82 ELSE
83 iladiag = -1
84 END IF
85 RETURN
86*
87* End of ILADIAG
88*
89 END
iladiag
integer function iladiag(diag)
ILADIAG
Definition iladiag.f:58
lsame
logical function lsame(ca, cb)
LSAME
Definition lsame.f:48